Greening ecological device for underground space and control method

Abstract

The invention relates to the technical field of underground space green plant cultivation, and particularly discloses a greening ecological device for an underground space and a control method. Comprising a cultivation box used for green plant cultivation, a vertical driving mechanism detachably connected with the cultivation box and used for controlling the cultivation box to move in the Z-axis direction, an irrigation system used for irrigating green plants cultivated in the cultivation box, and a locking mechanism used for locking the cultivation box and the vertical driving mechanism. The vertical driving mechanism comprises a shell and a vertical driving device which is installed on the shell and detachably connected with the cultivation box. The device can be fixedly installed on a stand column of an underground space, the occupied ground space is reduced, the vertical space in the underground structure environment is effectively utilized for greening, and the perception comfort degree of the space is improved; visual beautification can be effectively provided for the underground space, ecological benefits of the underground environment are improved through green plants, the air humidity and the oxygen content are increased, and the comfort level of personnel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground space green plant cultivation, and more specifically, to a greening ecological device for underground space and a control method. Background Art

[0002] With the acceleration of urbanization, underground spaces (such as subway stations, underground passages, large basements, etc.) have become an indispensable part of modern cities. However, due to the closedness and space limitations of the underground environment, these areas usually lack natural light and greenery, which may cause passengers to feel depressed and uncomfortable when staying for a long time. In order to improve the environmental quality of underground transportation space and enhance the comfort of passengers, the application of green ecological devices has become an important development direction.

[0003] At present, the underground greening devices available on the market have certain limitations. First, many devices occupy a large amount of ground space, which is not practical in underground space environments with dense traffic. Second, most existing greening systems rely on artificial irrigation, which is labor-intensive and difficult to achieve precise control, resulting in poor plant growth. In addition, some greening devices lack consideration of safety and maintenance convenience in their design, making it easy for plants to fall off and be damaged during long-term use, increasing maintenance costs and safety hazards.

[0004] Based on this, there is an urgent need for a green ecological device for underground space that can effectively utilize the green ecological device of underground space, which can not only provide good greening effects, but also achieve efficient irrigation and maintenance management through intelligent means, reduce manual intervention, and improve the safety and reliability of the system. This device should have the characteristics of space utilization optimization, safety protection measures, intelligent irrigation system and multi-functional expansion, so as to comprehensively improve the environmental quality and economic benefits of underground space. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a greening ecological device and a control method for underground space;

[0006] The solution adopted by the present invention to solve the technical problem is:

[0007] A greening ecological device for underground space, comprising a cultivation box for green plant cultivation, a vertical drive mechanism detachably connected to the cultivation box and used to control the movement of the cultivation box along the Z-axis direction, an irrigation system for irrigating the green plants cultivated in the cultivation box, and a locking mechanism for locking the cultivation box and the vertical drive mechanism;

[0008] The vertical driving mechanism comprises a shell and a vertical driving device which is installed on the shell and detachably connected to the cultivation box.

[0009] In some possible implementations, the vertical drive device includes a vertical drive member installed in the housing, and a placement table installed outside the housing and connected to the vertical drive member; the cultivation box is detachably mounted on the placement table.

[0010] In some possible embodiments, the vertical drive member includes a lead screw arranged along the Z-axis direction, a drive motor that is transmission-connected to one end of the lead screw and installed in an outer shell, a lifting platform that is sleeved on the outside of the lead screw and threadedly engaged with the lead screw, a guide rod that is arranged parallel to the lead screw and sleeved in the lifting platform, a guide groove that is arranged on the outer shell along the Z-axis direction, and a traction frame with one end passing through the guide groove and connected to the placement table.

[0011] In some possible embodiments, an anti-slip slide rail is arranged on the placement table and along the X-axis direction, and an anti-slip slide groove slidably matched with the anti-slip slide rail is arranged on the bottom of the cultivation box; the locking mechanism includes a rotating shaft arranged along the X-axis direction and sleeved in the placement table, a limit block connected to the side of the rotating shaft away from the vertical driving mechanism and limiting the movement of the cultivation box along the X-axis direction, and a rotating component transmission-connected to one end of the rotating shaft away from the limit block.

[0012] In some possible implementations, the rotating assembly includes a worm wheel 1 mounted on the outside of the rotating shaft, a worm 1 meshing with the worm wheel 1 and arranged along the Y-axis direction, a gear 1 coaxially connected to one end of the worm 1, and a rack 1 arranged on the housing and meshing with the gear 1;

[0013] When the placing table rises, gear one will pass through rack one and mesh with rack one, driving gear one to rotate around the Y-axis direction, thereby driving worm one to rotate around the Y-axis direction, driving worm wheel one and the rotating shaft connected to worm one to rotate around the X-axis direction, and driving the limit block to rotate around the X-axis direction toward the side close to the cultivation box, thereby limiting the movement of the cultivation box along the Y-axis direction.

[0014] In some possible implementations, the irrigation system includes an irrigation pipe disposed on the top of the housing and located above the cultivation box, a water pipe disposed in the housing and connected to the irrigation pipe, and a control valve installed on the water pipe.

[0015] In some possible implementations, the control valve includes a valve body installed on the water pipe, a valve core arranged in the valve body, and an opening and closing device connected to the valve core and controlling the rotation of the valve core to open and close the water pipe.

[0016] In some possible implementations, the opening and closing device includes a transmission shaft having one end extending into the valve body and connected to the valve core, and a driving member drivingly connected to the transmission shaft and used to control the transmission shaft to rotate around its axis;

[0017] The axis of the transmission shaft is arranged along the X-axis direction.

[0018] In some possible implementations, the driving member includes a worm gear 2 mounted on the outside of the transmission shaft, a worm gear that is matched with the worm gear 2 and arranged along the Y-axis direction, a gear 2 mounted on the worm gear 2, and a rack 2 that is meshed with the gear 2 and arranged on the traction frame;

[0019] During the rising process of the placement platform and after the locking mechanism locks the cultivation box, gear two will pass through rack two and mesh with rack two, driving gear two to rotate around the Y-axis direction, thereby driving worm two to rotate around the Y-axis direction, driving worm wheel two and the transmission shaft connected to worm two to rotate around the X-axis direction, driving the valve core to rotate around the X-axis direction, opening the water pipe to irrigate the green plants.

[0020] A control method for a greening ecological device for underground space according to the above,

[0021] The cultivation box with green plants is installed on the placement table, and its rise is controlled by the vertical drive mechanism;

[0022] When rack 1 meshes with gear 1, the limit block will rotate around the X-axis direction toward the side close to the cultivation box, thereby limiting the sliding of the cultivation box along the X-axis direction, achieving locking and fixing of the cultivation box, and then controlling the placement table to move upward to a specified height;

[0023] When irrigation is needed, open the water pipe to irrigate the green plants.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention can be fixedly installed on the pillars of the underground space, which not only reduces the occupation of the ground space, but also effectively utilizes the vertical space in the underground structure environment for greening, thereby improving the sensory comfort of the space; it can effectively provide visual beautification for the underground space, improve the ecological benefits of the underground environment through green plants, increase the air humidity and oxygen content, and improve the comfort of personnel;

[0026] The present invention automatically adjusts the irrigation amount according to soil moisture, reduces the need for manual operation, and improves the accuracy and efficiency of irrigation;

[0027] The present invention prevents the cultivation box from falling off during the lifting process through a locking mechanism, thereby reducing potential safety hazards;

[0028] The present invention utilizes the self-locking function of the worm and the worm wheel to ensure the stability and reliability of the locking device and the control valve when the device is subjected to external vibration or water pressure changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a usage state diagram of the present invention;

[0031] Figure 3 for Figure 2 Side view of

[0032] Figure 4 for Figure 3 The enlarged view of point a in the middle;

[0033] Figure 5 It is a schematic diagram of the structure of the housing, irrigation pipe, locking mechanism and driving member in the present invention;

[0034] Figure 6 It is a structural schematic diagram of the vertical drive mechanism, the cultivation box, and the housing in the present invention;

[0035] Figure 7 It is a structural schematic diagram of the cultivation box, the placement table, the rotating assembly, and the traction frame in the present invention;

[0036] Figure 8 It is a structural schematic diagram of the cultivation box of the present invention after being installed on a placement table and fixed by a locking mechanism;

[0037] Fig. 9 It is a schematic diagram of the structure of the control valve and water pipe.

[0038] Among them: 1. cultivation box; 11. anti-slip slide; 2. vertical drive mechanism; 20. placement table; 201. anti-slip slide rail; 21. shell; 211. guide groove; 22. lead screw; 23. drive motor; 24. lifting platform; 25. guide rod; 26. traction frame; 3. irrigation system; 31. irrigation pipe; 32. water pipe; 33. control valve; 331. valve body; 332. opening and closing device; 3321. worm gear 2; 3322. worm gear 2; 3323. gear 2; 3324. rack gear 2; 333. transmission shaft; 4. locking mechanism; 41. rotating shaft; 42. limit block; 43. rotating assembly; 431. worm gear 1; 432. worm gear 1; 433. gear 1; 434. rack gear 1. DETAILED DESCRIPTION

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity restriction, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The present invention is described in detail below.

[0041] In the present invention, the Z-axis direction is the Z-axis direction;

[0042] like Figure 1-Figure 9 As shown:

[0043] A greening ecological device for underground space, comprising a cultivation box 1 for green plant cultivation, a vertical drive mechanism 2 detachably connected to the cultivation box 1 and used to control the movement of the cultivation box 1 along the Z-axis direction, an irrigation system 3 for irrigating the green plants cultivated in the cultivation box 1, and a locking mechanism 4 for locking the cultivation box 1 and the vertical drive mechanism 2;

[0044] The vertical driving mechanism 2 includes a housing 21 and a vertical driving device installed on the housing 21 and detachably connected to the cultivation box 1 .

[0045] When in use, the cultivation box 1 with green plants is connected to the vertical drive device, and then it is lifted to the required height. The irrigation system 3 may irrigate it according to the needs of the green plants; the locking mechanism 4 fixes the cultivation box 1 and the vertical drive mechanism 2 to prevent the cultivation box 1 from slipping during the lifting or lowering process; the outer shell 21 is installed on the column in the underground space, and the vertical drive mechanism 2 lifts and suspends the green plants; the space utilization rate is improved; the sensory comfort of the space is improved; it can effectively provide visual beautification for the underground space, improve the ecological benefits of the underground environment through green plants, increase the air humidity and oxygen content, and improve the comfort of personnel; when green plant irrigation is needed, it can be carried out through the irrigation system, which is simple and convenient to operate.

[0046] In some possible implementations, in order to effectively control the cultivation box 1 to realize the movement along the Z-axis direction; the vertical driving device includes a vertical driving member installed in the housing 21, and a placement table 20 installed outside the housing 21 and connected to the vertical driving member; the cultivation box 1 can be detachably installed on the placement table 20;

[0047] When in use, the cultivation box 1 with green plants is detachably installed on the placement table 20, and the placement table 20 and the cultivation box 1 are locked by using the locking mechanism 4. Then, the placement table 20 is lifted to a specified height along the Z-axis direction by the vertical driving member, so that the cultivation box does not occupy ground space; when replacing green plants, the placement table 20 is controlled to move downward, and then the cultivation box 1 can be replaced.

[0048] In some possible embodiments, in order to effectively drive the placement table 20 to move along the Z-axis direction through the vertical driving member; the vertical driving member includes a screw 22 arranged along the Z-axis direction, a driving motor 23 that is transmission-connected to one end of the screw 22 and installed in the outer shell 21, a lifting platform 24 that is sleeved on the outside of the screw 22 and screwed with the screw 22, a guide rod 25 that is arranged parallel to the screw 22 and sleeved in the lifting platform 24, a guide groove 211 arranged on the outer shell 21 along the Z-axis direction, and a traction frame 26 with one end passing through the guide groove 211 and connected to the placement table 20, and the other end of the traction frame 26 is connected to the lifting platform 24.

[0049] Specifically, the guide grooves 211 are in two groups and are arranged in parallel along the Z-axis direction; the traction frame 26 includes two groups of Z-shaped and symmetrically arranged brackets, and the placement table 20 is on the support surface formed by the two groups of brackets; the other ends of the two groups of brackets pass through the corresponding guide grooves 211 and are connected to the lifting platform 24;

[0050] The lead screw 22 is rotatably connected to the housing 21 through a bearing, and one end of the lead screw 22 is transmission-connected to a driving motor 23. The driving motor 23 drives the lead screw 22 to rotate around the Z-axis direction, thereby enabling the lifting platform 24 mounted on the outside of the lead screw 22 to move along the length direction of the lead screw 22. The guide rod 25 is mounted inside the lifting platform 24 and arranged along the Z-axis direction to limit the axial rotation of the lifting platform 24 around the lead screw 22, so that the lifting platform 24 can only make a linear motion in the length direction of the lead screw 22, thereby driving the traction frame 26 to move in the guide groove 211, and finally enabling the placement table 20 equipped with the cultivation box 1 to move along the Z-direction.

[0051] In some possible embodiments, an anti-slip rail 201 is arranged on the placement table 20 and along the X-axis direction, and an anti-slip groove 11 slidably matched with the anti-slip rail 201 is arranged at the bottom of the cultivation box 1; the locking mechanism 4 includes a rotating shaft 41 arranged along the X-axis direction and sleeved in the placement table 20, a limit block 42 connected to the side of the rotating shaft 41 away from the vertical driving mechanism 2 and limiting the movement of the cultivation box 1 along the X-axis direction, and a rotating component 43 transmission-connected to the end of the rotating shaft 41 away from the limit block 42.

[0052] Specifically, the anti-slip groove 11 is a dovetail groove or a T-shaped groove, and the small end has an opening. The cross section of the anti-slip rail 201 is dovetail-shaped or T-shaped to prevent the two from separating in the Z-axis direction.

[0053] In some possible implementations, the rotating assembly 43 includes a worm wheel 431 mounted on the outside of the rotating shaft 41, a worm 432 meshing with the worm wheel 431 and arranged along the Y-axis direction, a gear 433 coaxially connected to one end of the worm 432, and a rack 434 arranged on the housing 21 and meshing with the gear 433;

[0054] When the placement table 20 rises, the gear 433 will pass through the rack 434 and mesh with the rack 434, thereby driving the gear 433 to rotate around the Y-axis direction, and then driving the worm 432 to rotate around the Y-axis direction, realizing the rotation of the worm wheel 431 and the rotating shaft 41 connected to the worm 432 around the X-axis direction, driving the limit block 42 to rotate around the X-axis direction toward the side close to the cultivation box 1, limiting the movement of the cultivation box 1 along the X-axis direction to avoid separation of the two, and combining with the anti-slip slide rail 201 to realize the fixation of the cultivation box 1 and the placement table 20.

[0055] In some possible embodiments, the irrigation system 3 includes an irrigation pipe 31 disposed on the top of the shell 21 and located above the cultivation box 1 , a water pipe 32 disposed in the shell 21 and connected to the irrigation pipe 31 , and a control valve 33 installed on the water pipe 32 .

[0056] Specifically, the housing 21 includes a housing for mounting a driving motor 23, a lead screw 22 and a guide rod 25 and provided with a guide groove 211, and a top platform provided on the top of the housing and located above the placement platform 20; an irrigation pipe 31 is installed on one side of the top platform close to the placement platform 20; and an irrigation hole is provided on the irrigation pipe 31;

[0057] Furthermore, a plant light is provided on the top platform, which simulates the principle that plants need sunlight for photosynthesis, and supplements the light for plants or completely replaces sunlight;

[0058] The water pipe 32 is disposed in the housing and the top end is connected to the irrigation pipe 31. The other end of the water pipe 32 is connected to an external water source. The control valve 33 is used to control the opening or closing of the water pipe 32.

[0059] Furthermore, the water pipe 32 is connected to the municipal water pipeline. When the control valve 33 is opened, water enters the irrigation pipe 31 through the water pipe 32 under the water pressure of the municipal water, and then flows out from the irrigation hole to irrigate the green plants in the cultivation box 1; when the control valve 33 is closed, the green plants in the cultivation box 1 cannot be irrigated;

[0060] Preferably, the irrigation system 3 further includes a humidity sensor disposed in the cultivation box 1, and a control module disposed in the housing and connected to the drive motor 23 and the control valve 33;

[0061] The humidity sensor detects the humidity in the cultivation box 1 and transmits the data to the control module, which analyzes the data and opens the control valve 33 to irrigate the green plants if irrigation is required.

[0062] In some possible implementations, the control valve 33 includes a valve body 331 installed on the water pipe 32, a valve core disposed in the valve body 331, and an opening and closing device 332 connected to the valve core and controlling the valve core 33 to rotate to open and close the water pipe 32;

[0063] The opening and closing device 332 is used to control the valve 33 core to rotate around the X-axis direction, so as to realize the opening or closing of the water pipe 32. The opening and closing device 332 can be connected to the control module.

[0064] In some possible embodiments, the opening and closing device 332 includes a transmission shaft 333 with one end extending into the valve body 331 and connected to the valve core, and a driving member connected to the transmission shaft 333 and used to control the transmission shaft 333 to rotate around its axis; the axis of the transmission shaft 333 is set along the X-axis direction.

[0065] The transmission shaft 333 is arranged along the X-axis direction and one end thereof extends into the valve body 331 to be connected with the valve core. The driving member is used to control the transmission shaft 333 to rotate, thereby driving the valve core to rotate and opening or closing the water delivery pipe 32 .

[0066] In some possible implementations, the driving member includes a worm gear 3321 sleeved on the outside of the transmission shaft 333, a worm gear 3323 sleeved on the worm gear 3322 and meshing with the worm gear 3321 and arranged along the Y-axis direction, and a rack gear 3324 meshing with the gear gear 3323 and arranged on the traction frame 26;

[0067] During the rising process of the placing platform 20 and after the locking mechanism 4 locks the cultivation box 1, it reaches the specified position; when irrigation is needed, the vertical driving mechanism 2 controls the placing platform 20 to continue to rise upward, and during the lifting process, the gear 2 3323 will pass through the rack 2 3324 and mesh with the rack 2 3324, driving the gear 2 3323 to rotate around the Y-axis direction, thereby driving the worm 2 3322 to rotate around the Y-axis direction, driving the worm wheel 2 3321 and the transmission shaft 333 connected to the worm 2 3322 to rotate around the X-axis direction, driving the valve core to rotate around the X-axis direction, opening the water pipe 32, and The green plants are irrigated; after the irrigation is completed, the placement table 20 returns to the specified position under the drive of the vertical drive mechanism 2; in this way, there is no need to automatically control the drive member to open the valve core, and the control module only needs to control the entire placement table 20 to move along the Z-axis direction according to the humidity data to achieve irrigation; thereby reducing the number of driving sources, reducing the failure rate, and also achieving the desired irrigation effect, using the self-locking effect of the worm 3322 and the worm wheel 3321, when the control valve 33 is opened or closed, it cannot fail to open or close due to external vibration or water pressure, thereby ensuring the normal function of the device.

[0068] Furthermore, when the present invention is applied to a public building such as an underground shopping mall, a billboard can be installed on the side of the traction frame 26 away from the housing.

[0069] A control method for a greening ecological device for underground space according to the above,

[0070] The cultivation box 1 with green plants is installed on the placement table 20, and its rise is controlled by the vertical drive mechanism 2;

[0071] Specifically, the lead screw 22 is controlled to rotate in the forward direction by the driving motor 23, so that the lifting platform 24 rises along the long direction (Z-axis direction) of the lead screw 22, thereby driving the placement platform 20 connected to the traction frame 26 to rise, and finally realizing the rise of the cultivation box 1 detachably mounted on the placement platform 20; on the contrary, the lead screw 22 is controlled to rotate in the reverse direction to realize the lowering of the placement platform 20, and realize the replacement of the cultivation box 1;

[0072] During the ascending process, when the rack 434 is meshed with the gear 433, since the gear 433 is coaxially connected with the worm 432, the rotating shaft will rotate around the X-axis direction, thereby driving the limit block 42 to rotate toward the side close to the cultivation box 1, thereby limiting the sliding of the cultivation box 1 along the X-axis direction, achieving the locking and fixing of the cultivation box 1, and then controlling the placement table 20 to move upward to a specified height; otherwise, the limit block 42 is moved away from the cultivation box 1, so that the cultivation box 1 can be separated from the placement table 20 along the X-axis direction, and the cultivation box 1 can be replaced;

[0073] When the control module monitors the need for irrigation based on the data from the humidity sensor, it opens the water pipe 32 to irrigate the green plants;

[0074] Specifically, the control module can be used to control the valve 33 to open, thereby opening the water pipe 32, thereby achieving irrigation of green plants;

[0075] It is also possible to use the method that after the cultivation box 1 is lifted to the specified height, when irrigation is needed, the cultivation box 1 is controlled to move along the Z-axis direction through the vertical drive mechanism 2, and the gear 2 3323 passes through the rack 2 3324 and meshes with the rack 2 3324, driving the gear 2 3323 to rotate around the Y-axis direction, thereby driving the worm 2 3322 to rotate around the Y-axis direction, driving the worm wheel 2 3321 and the transmission shaft 333 connected to the worm 2 3322 to rotate around the X-axis direction, driving the valve core to rotate around the X-axis direction, opening the water pipe 32, and irrigating the green plants; after the irrigation is completed, the cultivation box 1 returns to the specified position under the control of the vertical drive mechanism 2, the gear 2 3323 moves in the opposite direction, the water pipe 32 is closed, and the irrigation is completed.

[0076] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A greening ecological device for underground space, characterized in that: It includes a cultivation box for green plant cultivation, a vertical drive mechanism detachably connected to the cultivation box and used to control the movement of the cultivation box along the Z-axis direction, an irrigation system for irrigating the green plants cultivated in the cultivation box, and a locking mechanism for locking the cultivation box and the vertical drive mechanism; The vertical driving mechanism comprises a shell and a vertical driving device which is installed on the shell and detachably connected to the cultivation box.

2. The greening ecological device for underground space according to claim 1, characterized in that: The vertical driving device comprises a vertical driving member installed in a shell, and a placing table installed outside the shell and connected to the vertical driving member; the cultivation box is detachably installed on the placing table.

3. The greening ecological device for underground space according to claim 2, characterized in that: The vertical driving component includes a lead screw arranged along the Z-axis direction, a driving motor connected to one end of the lead screw and installed in a shell, a lifting platform sleeved on the outside of the lead screw and threadedly engaged with the lead screw, a guide rod arranged parallel to the lead screw and sleeved in the lifting platform, a guide groove arranged on the shell along the Z-axis direction, and a traction frame with one end passing through the guide groove and connected to the placement table.

4. The greening ecological device for underground space according to claim 2, characterized in that: An anti-slip slide rail is arranged on the placement table and along the X-axis direction, and an anti-slip slide groove slidably matched with the anti-slip slide rail is arranged at the bottom of the cultivation box; The locking mechanism includes a rotating shaft arranged along the X-axis direction and sleeved in the placing table, a limit block connected to the side of the rotating shaft away from the vertical driving mechanism and limiting the movement of the cultivation box along the X-axis direction, and a rotating component transmission-connected to the end of the rotating shaft away from the limit block.

5. The greening ecological device for underground space according to claim 4, characterized in that: The rotating assembly includes a worm wheel 1 mounted on the outside of the rotating shaft, a worm 1 meshing with the worm wheel 1 and arranged along the Y-axis direction, a gear 1 coaxially connected to one end of the worm 1, and a rack 1 arranged on the housing and meshing with the gear 1; When the placing table rises, gear one will pass through rack one and mesh with rack one, driving gear one to rotate around the Y-axis direction, thereby driving worm one to rotate around the Y-axis direction, driving worm wheel one and the rotating shaft connected to worm one to rotate around the X-axis direction, and driving the limit block to rotate around the X-axis direction toward the side close to the cultivation box, thereby limiting the movement of the cultivation box along the Y-axis direction.

6. A greening ecological device for underground space according to any one of claims 2 to 5, characterized in that: The irrigation system comprises an irrigation pipe arranged on the top of the shell and located above the cultivation box, a water delivery pipe arranged in the shell and connected with the irrigation pipe, and a control valve installed on the water delivery pipe.

7. The greening ecological device for underground space according to claim 6, characterized in that: The control valve comprises a valve body installed on a water pipe, a valve core arranged in the valve body, and an opening and closing device connected to the valve core and controlling the rotation of the valve core to open and close the water pipe.

8. The greening ecological device for underground space according to claim 7, characterized in that: The opening and closing device includes a transmission shaft with one end extending into the valve body and connected to the valve core, and a driving member connected to the transmission shaft and used to control the transmission shaft to rotate around its axis; The axis of the transmission shaft is arranged along the X-axis direction.

9. The greening ecological device for underground space according to claim 8, characterized in that: The driving member includes a worm gear 2 mounted on the outside of the transmission shaft, a worm gear matched with the worm gear 2 and arranged along the Y-axis direction, a gear 2 mounted on the worm gear 2, and a rack 2 meshing with the gear 2 and arranged on the traction frame; During the rising process of the placement platform and after the locking mechanism locks the cultivation box, gear two will pass through rack two and mesh with rack two, driving gear two to rotate around the Y-axis direction, thereby driving worm two to rotate around the Y-axis direction, driving worm wheel two and the transmission shaft connected to worm two to rotate around the X-axis direction, driving the valve core to rotate around the X-axis direction, opening the water pipe to irrigate the green plants.

10. A control method for a greening ecological device for underground space according to any one of claims 1 to 9, characterized in that: The cultivation box with green plants is installed on the placement table, and its rise is controlled by the vertical drive mechanism; When rack 1 meshes with gear 1, the limit block will rotate around the X-axis direction toward the side close to the cultivation box, thereby limiting the sliding of the cultivation box along the X-axis direction, achieving locking and fixing of the cultivation box, and then controlling the placement table to move upward to a specified height; When irrigation is needed, open the water pipe to irrigate the green plants; After irrigation is completed, gear 2 is separated from rack 2, and the valve core closes the water pipe.

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